<table class="tab_form">
    <tr>
        <td>主题：<?php echo $announcements['title']; ?></td>
        <td>
        公告类型：<?php echo $announcements['announcements_type']; ?>
        </td>
        <td></td>
    </tr>
    <tr>
        <td colspan="3">
            内容：<?php
            if (!is_null($announcements)) {
                echo $announcements['content'];
            }
            ?>
        </td>
    </tr>
    <tr>
        <td>
            开始时间：<?php echo $announcements['start_time']; ?>
        </td>
        <td>
            结束时间：<?php echo $announcements['end_time']; ?>
            </td>
        <td></td>
    </tr>
</table>
